Quantum dot complex and display apparatus including the same

Abstract

The display apparatus includes a light source; and a quantum dot complex disposed in front of the light source, and configured to convert a wavelength of light emitted from the light source. The quantum dot complex includes an oxide having dendritic structure; and a quantum dot bonded to the oxide.

What is claimed is: 
     
       1. A display apparatus comprising:
 a light source; and 
 a quantum dot complex disposed in front of the light source, and configured to convert a wavelength of light emitted from the light source, 
 wherein the quantum dot complex comprises:
 an oxide having dendritic structure; and 
 a quantum dot bonded to the oxide. 
 
 
     
     
       2. The display apparatus according to  claim 1 , wherein the oxide comprises at least one from among silicon dioxide (SiO 2 ), aluminum oxide (Al 2 O 3 ), and titanium dioxide (TiO 2 ). 
     
     
       3. The display apparatus according to  claim 1 , wherein the oxide is configured to have a functional group, on a surface of the oxide, chemically bonded to a surface of the quantum dot. 
     
     
       4. The display apparatus according to  claim 1 , wherein the oxide comprises silicon dioxide (SiO 2 ), and is surface-treated by a silane coupling agent to have a thiol functional group. 
     
     
       5. The display apparatus according to  claim 4 , wherein the quantum dot is further configured to physically adsorb to a surface of the surface-treated SiO 2  and chemically bond with the thiol functional group. 
     
     
       6. The display apparatus according to  claim 1 , wherein the quantum dot complex is disposed in front of the light source by an in-chip method or an on-chip method. 
     
     
       7. The display apparatus according to  claim 1 , further comprising:
 a liquid crystal panel; and 
 a backlight unit configured to supply light to the liquid crystal panel, and comprising the light source and the quantum dot complex. 
 
     
     
       8. The display apparatus according to  claim 1 , wherein the light source comprises a blue light emitting diode (LED) configured to emit a blue light; and
 wherein the quantum dot complex further comprises:
 a red quantum dot configured to convert the blue light into a red light; and 
 a green quantum dot configured to convert the blue light into a green light. 
 
 
     
     
       9. The display apparatus according to  claim 1 , wherein the light source comprises a blue light emitting diode (LED) included in a red subpixel, a blue LED included in a green subpixel, and a blue LED included in a blue subpixel; and
 wherein the quantum dot complex further comprises:
 a red quantum dot complex included in the red subpixel, and configured to convert a blue light to a red light; and 
 a green quantum dot complex included in the green subpixel, and configured to convert the blue light to a green light. 
 
 
     
     
       10. The display apparatus according to  claim 1 , wherein the oxide is configured to emit heat generated by the light source or the quantum dot. 
     
     
       11. A quantum dot complex comprising:
 an oxide having dendritic structure; and 
 a quantum dot bonded to the oxide. 
 
     
     
       12. The quantum dot complex according to  claim 11 , wherein the oxide comprises at least one from among silicon dioxide (SiO 2 ), aluminum oxide (Al 2 O 3 ), and titanium dioxide (TiO 2 ). 
     
     
       13. The quantum dot complex according to  claim 11 , wherein the oxide is configured to have a functional group, on a surface of the oxide, chemically bonded to a surface of the quantum dot. 
     
     
       14. The quantum dot complex according to  claim 11 , wherein the oxide comprises silicon dioxide (SiO 2 ), and is surface-treated by a silane coupling agent to have a thiol functional group. 
     
     
       15. The quantum dot complex according to  claim 14 , wherein the quantum dot is configured to physically adsorb to a surface of the surface-treated SiO 2  and chemically bond with the thiol functional group.